Add aarch64 node

[futurejones]

Add node for arm64/aarch64 ubuntu 16.04

[vielmetti]

Looks good, looking forward to seeing this added.

[vielmetti]

PR should include an update to the README file too

https://github.com/apple/swift-community-hosted-continuous-integration/blob/master/README.md

[shahmishal]

@futurejones Email sent for additional information.

[vielmetti]

@shahmishal Happy to also be part of the conversation if you have any questions about @packethost and the Works on Arm program.

[shahmishal]

LGTM!

[shahmishal]

@futurejones / @vielmetti Did you want to add a bot for master branch too?

[shahmishal]

Node: https://ci-external.swift.org/computer/ubuntu-16.04-aarch64/
Jobs:

• swift-4.1-branch - https://ci-external.swift.org/job/oss-swift-4.1-RA-linux-ubuntu-16.04-aarch64/
• swift-4.2-branch - https://ci-external.swift.org/job/oss-swift-4.2-RA-linux-ubuntu-16.04-aarch64/

[shahmishal]

@futurejones, are you aware of the current failure?

Foundation/NSString.swift:1182:106: error: cannot convert value of type 'CVaListPointer' to expected argument type 'va_list' (aka '__va_list')
        let str = CFStringCreateWithFormatAndArguments(kCFAllocatorSystemDefault, nil, format._cfObject, argList)!
                                                                                                         ^~~~~~~
Foundation/NSString.swift:1190:148: error: cannot convert value of type 'CVaListPointer' to expected argument type 'va_list' (aka '__va_list')
                str = CFStringCreateWithFormatAndArguments(kCFAllocatorSystemDefault, unsafeBitCast(loc, to: CFDictionary.self), format._cfObject, argList)
                                                                                                                                                   ^~~~~~~
Foundation/NSString.swift:1195:106: error: cannot convert value of type 'CVaListPointer' to expected argument type 'va_list' (aka '__va_list')
            str = CFStringCreateWithFormatAndArguments(kCFAllocatorSystemDefault, nil, format._cfObject, argList)
                                                                                                         ^~~~~~~
Foundation/NSString.swift:1202:100: error: cannot convert value of type 'CVaListPointer' to expected argument type 'va_list' (aka '__va_list')
            CFStringCreateWithFormatAndArguments(kCFAllocatorSystemDefault, nil, format._cfObject, vaPtr)
                                                                                                   ^~~~~

https://ci-external.swift.org/job/oss-swift-RA-linux-ubuntu-16.04-aarch64/4/console
https://ci-external.swift.org/job/oss-swift-4.1-RA-linux-ubuntu-16.04-aarch64/1/console
https://ci-external.swift.org/job/oss-swift-4.2-RA-linux-ubuntu-16.04-aarch64/5/console

[futurejones]

Yes I am aware of these issues.
A PR was submitted on Mar 12 to fix this.
swiftlang/swift#15174